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DOI	10.1016/j.geoderma.2020.114683
	Effects of warming and rainfall pulses on soil respiration in a biological soil crust-dominated desert ecosystem
	Guan, Chao; Zhang, Peng; Zhao, Changming; Li, Xinrong
通讯作者	Zhao, CM (通讯作者)，Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China. ; Li, XR (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	0016-7061
EISSN	1872-6259
卷号	381
英文摘要	Biological soil crusts (BSCs) across desert ecosystems play an important role in modulating terrestrial carbon cycles. Global warming and changes in precipitation patterns are expected to be important triggers for biological activity in BSC-dominated desert ecosystems. Therefore, it is crucial to study the effects of warming and rainfall pulses on soil respiration dynamics at BSC-dominated microsites to predict terrestrial carbon cycling under climate change. In this study, soil respiration rates were monitored continuously during three types of natural precipitation events in lichen-dominated and moss-dominated crusts in both control and warming treatments. Our results revealed that soil respiration was inhibited in BSC-dominated microsites in the warming treatment because of reduced soil water content induced by the warmer conditions, and that the extent of inhibition was lower in the lichen-dominated crusts than in the moss-dominated crusts. During all the precipitation events, soil respiration rates were significantly increased by rainfall pulses and gradually declined thereafter. Over the daily cycle, the clockwise diel hysteresis loop between soil respiration and soil temperature was modified by soil water availability, which was affected by the magnitude of rainfall pulses. Moreover, the effect of photosynthetically active radiation and the mismatch between the depth of carbon dioxide (CO2) production and soil temperature measurement may have contributed to the diel hysteresis pattern. Our results indicated that warming and different types of precipitation events in BSC-dominated desert ecosystems impact soil carbon release through changes in the magnitude of soil respiration.
关键词	TENGGER DESERT PRECIPITATION PULSES SEASONAL-VARIATION NITROGEN ADDITION CARBON EXCHANGE CLIMATE-CHANGE LOESS PLATEAU RESPONSES TEMPERATURE BIOCRUST
英文关键词	Soil respiration; Biological soil crust; Precipitation; Warming; Diel hysteresis
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000582381600010
来源期刊	GEODERMA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253967
作者单位	[Guan, Chao; Zhao, Changming] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China; [Zhang, Peng; Li, Xinrong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Gansu, Peoples R China; [Guan, Chao; Zhao, Changming] Lanzhou Univ, Gansu Prov Field Sci Observat & Res Stn Mt Ecosys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Guan, Chao,Zhang, Peng,Zhao, Changming,et al. Effects of warming and rainfall pulses on soil respiration in a biological soil crust-dominated desert ecosystem[J]. 中国科学院西北生态环境资源研究院,2021,381.
APA	Guan, Chao,Zhang, Peng,Zhao, Changming,&Li, Xinrong.(2021).Effects of warming and rainfall pulses on soil respiration in a biological soil crust-dominated desert ecosystem.GEODERMA,381.
MLA	Guan, Chao,et al."Effects of warming and rainfall pulses on soil respiration in a biological soil crust-dominated desert ecosystem".GEODERMA 381(2021).